Open street maps low precision

Dear Garmin, is it possible to use more precision open street maps in Garmin Explore?

For expample, for my Fenix 5x Plus i’m using maps from and this maps is more heavy (460MB) than downloaded from Garmin Explore app (112MB).
I want to use the same quality maps and for my Garmin Instinct but there are no ways to do this:(

Also I figured out that maps for iOS explore app are different from the website.

P.S. I’m from Ukraine and I’m telling about maps for Ukraine.